Finding the Third Proportional to 79,689 and 173,398

Step by Step Solution

1. Step 1: Write the proportion equation
   79,689 : 173,398 = 173,398 : x
2. Step 2: Convert to fraction form
   79,689/173,398 = 173,398/x
3. Step 3: Cross multiply
   79,689x = 173,398 × 173,398
4. Step 4: Simplify right side
   79,689x = 30,066,866,404
5. Step 5: Solve for x
   x = 30,066,866,404/79,689
6. Step 6: Final answer
   x = 377,302.59